Numerical knowledge
Clinical parameters
Browse physiological and laboratory parameters together with specimen, method, unit, population context and curated reference bands.
Ranges are source-, method-, specimen-, age-, sex- and population-specific. They are educational reference data, not a substitute for the reporting laboratory or clinical judgement.
Erythrocyte Indices
AMW:PARAM:115015ERYTHROCYTE size and HEMOGLOBIN content or concentration, usually derived from ERYTHROCYTE COUNT; BLOOD hemoglobin concentration; and HEMATOCRIT. The indices i…
Erythrocyte Volume
AMW:PARAM:105004Volume of circulating ERYTHROCYTES . It is usually measured by RADIOISOTOPE DILUTION TECHNIQUE.
Estimated Fluid Sequestration
AMW:PARAM:155001Estimated fluid sequestration is a dynamic severity parameter used in acute pancreatitis criteria.
Expiratory Reserve Volume
AMW:PARAM:135012The extra volume of air that can be expired with maximum effort beyond the level reached at the end of a normal, quiet expiration. Common abbreviation is ERV.
Fetal Weight
AMW:PARAM:140003The weight of the FETUS in utero. It is usually estimated by various formulas based on measurements made during PRENATAL ULTRASONOGRAPHY.
Forced Expiratory Flow Rates
AMW:PARAM:135021The rate of airflow measured during a FORCED VITAL CAPACITY determination.
Forced Expiratory Volume
AMW:PARAM:135007Measure of the maximum amount of air that can be expelled in a given number of seconds during a FORCED VITAL CAPACITY determination . It is usually given as FE…
Functional Residual Capacity
AMW:PARAM:135011The volume of air remaining in the LUNGS at the end of a normal, quiet expiration. It is the sum of the RESIDUAL VOLUME and the EXPIRATORY RESERVE VOLUME. Comm…
Galvanic Skin Response
AMW:PARAM:160025A change in electrical resistance of the skin, occurring in emotion and in certain other conditions.
Gene Frequency
AMW:PARAM:210002The proportion of one particular in the total of all ALLELES for one genetic locus in a breeding POPULATION.
Genetic Load
AMW:PARAM:210004The relative amount by which the average fitness of a POPULATION is lowered, due to the presence of GENES that decrease survival, compared to the GENOTYPE with…
Gestational Age
AMW:PARAM:210006The age of the conceptus, beginning from the time of FERTILIZATION. In clinical obstetrics, the gestational age is often estimated from the onset of the last M…
Gestational Weight Gain
AMW:PARAM:200003Increase in body weight of the mother during the course of her PREGNANCY.
Glomerular Filtration Rate
AMW:PARAM:140002The volume of water filtered out of plasma through glomerular capillary walls into Bowman's capsules per unit of time. It is considered to be equivalent to INU…
Glycated Hemoglobin
AMW:PARAM:115001HbA1c is a glycated hemoglobin laboratory parameter used to assess chronic glycemic status and diabetes mellitus criteria.
Glycemic Index
AMW:PARAM:125023A numerical system of measuring the rate of BLOOD GLUCOSE generation from a particular food item as compared to a reference item, such as glucose = 100. Foods …
Glycemic Load
AMW:PARAM:125024A quantitative value of a measured amount of a specific food that is equal to the GLYCEMIC INDEX of that food multiplied by the carbohydrate content of that fo…
Heart Rate
AMW:PARAM:105014The number of times the HEART VENTRICLES contract per unit of time, usually per minute.
Hydrogen-Ion Concentration
AMW:PARAM:125020The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH = log 1/2[1/(H+)], where (H+) is the h…
Hydrostatic Pressure
AMW:PARAM:190004The pressure due to the weight of fluid.
Ideal Body Weight
AMW:PARAM:160016Expected weight of a healthy normal individual based on age, sex, and height. Thus, a malnourished person would weigh less than their ideal body weight.
Immunogenicity, Vaccine
AMW:PARAM:125019The capacity of VACCINES to stimulate the ADAPTIVE IMMUNE RESPONSE to produce antibodies and antigen-specific T-CELL responses. It is typically measured in vac…
Inhibitory Concentration 50
AMW:PARAM:125018The concentration of a compound needed to reduce population growth of organisms, including eukaryotic cells, by 50% in vitro. Though often expressed to denote …
Inspiratory Capacity
AMW:PARAM:135014The maximum volume of air that can be inspired after reaching the end of a normal, quiet expiration. It is the sum of the TIDAL VOLUME and the INSPIRATORY RESE…
Inspiratory Reserve Volume
AMW:PARAM:135015The extra volume of air that can be inspired with maximal effort after reaching the end of a normal, quiet inspiration. Common abbreviation is IRV.
Intracranial Pressure
AMW:PARAM:160003Pressure within the cranial cavity. It is influenced by brain mass, the circulatory system, CSF dynamics, and skull rigidity.
Intraocular Pressure
AMW:PARAM:170001The pressure of the fluids in the eye.
Lod Score
AMW:PARAM:210003The total relative probability, expressed on a logarithmic scale, that a linkage relationship exists among selected loci. Lod is an acronym for logarithmic odd…
Lung Compliance
AMW:PARAM:135019The capability of the LUNGS to distend under pressure as measured by pulmonary volume change per unit pressure change. While not a complete description of the …
Maternal Age
AMW:PARAM:210007The age of the mother in PREGNANCY.